An attractive nucleon-nucleon spin-orbit force from skyrmions with dilatons

Details An attractive nucleon-nucleon spin-orbit force from skyrmions with dilatons An attractive nucleon-nucleon spin-orbit force from skyrmions with dilatons

1995-01-30

arxiv.org/abs/hep-ph/9501400v1

Phys.Lett. B349 (1995) 416-420

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages plus 5 figures in uuencoded tar-compressed form

Scientific paper

10.1016/0370-2693(95)00286-T

Within the skyrmion approach for the nucleon-nucleon force, difficulties have been experienced in obtaining an isoscalar attractive spin-orbit potential, in parallel to the problems of finding attraction in the isoscalar central potential. We here study the spin-orbit force using a skyrmion with four- and six-derivative stabilizing terms in the lagrangian as well as with the crucial addition of a dilaton. With these features present the spin-orbit force proves to be attractive as does the central potential. In the absence of the dilaton, attraction can also be found for the spin-orbit potential but only at the expense of a greatly over-emphasized term with six derivatives and a continuing absence of attraction in the central potential.

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